One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,14)(4,11)(5,10)(6,15)(7,9)(8,13)(12,16)(17,18)(19,23)(20,30)(21,22)(24,25)(26,31)(27,28)(29,32)(33,34,38,37)(35,39,41,43)(36,40,44,45)(42,46,47,48)(1,3,8,7)(2,9,13,14)(4,15,5,12)(6,11,16,10)(17,19,24,29)(18,23,25,32)(20,27,21,26)(22,31,30,28)(35,41)(39,43)(42,47)(46,48)(1,4,8,5)(2,10,13,11)(3,15,7,12)(6,14,16,9)(17,20,24,21)(18,22,25,30)(19,26,29,27)(23,28,32,31)(33,35,38,41)(34,39,37,43)(36,42,44,47)(40,46,45,48)(1,5,8,4)(2,11,13,10)(3,15,7,12)(6,14,16,9)(17,21,24,20)(18,22,25,30)(19,27,29,26)(23,28,32,31)(33,36)(34,40)(35,42)(37,45)(38,44)(39,46)(41,47)(43,48)(1,6,8,16)(2,12,13,15)(3,10,7,11)(4,9,5,14)(17,22)(18,20)(19,28)(21,25)(23,26)(24,30)(27,32)(29,31)(33,35)(34,39)(36,42)(37,43)(38,41)(40,46)(44,47)(45,48)(1,7,8,3)(2,9,13,14)(4,12,5,15)(6,11,16,10)(17,23,24,32)(18,19,25,29)(20,28,21,31)(22,26,30,27)(33,37,38,34)(35,43,41,39)(36,40,44,45)(42,46,47,48)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.